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DEBT - Schedule of Term Loans (Details) - USD ($) $ in Millions				12 Months Ended
	Sep. 17, 2025	Sep. 16, 2025	Aug. 19, 2025	Sep. 30, 2025	Sep. 30, 2024
Debt Instrument [Line Items]
Gross Amount				$ 29,520	$ 24,581
Term loans
Debt Instrument [Line Items]
Gross Amount				11,124	8,702
Tranche I | Term loans
Debt Instrument [Line Items]
Gross Amount				$ 0	1,871
Debt Instrument, Basis Spread on Variable Rate				2.75%
Tranche J | Term loans
Debt Instrument [Line Items]
Gross Amount				$ 3,595	3,632
Debt Instrument, Basis Spread on Variable Rate				2.50%
Tranche K | Term loans
Debt Instrument [Line Items]
Gross Amount				$ 3,544	1,699
Debt Instrument, Basis Spread on Variable Rate	2.25%	2.75%		2.25%
Tranche L | Term loans
Debt Instrument [Line Items]
Gross Amount				$ 1,485	1,500
Debt Instrument, Basis Spread on Variable Rate				2.50%
Tranche M | Term loans
Debt Instrument [Line Items]
Gross Amount				$ 2,500	$ 0
Debt Instrument, Basis Spread on Variable Rate			2.50%	2.50%

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